ISB ~ Mark 1 v1

The beginning:The opening verse is a title for the entire Gospel.

the gospel:The “good news” that Christ has come to rescue all nations from sin, selfishness, and Satan and to reveal the inner life of God to the world. This is accomplished as Jesus inaugurates the kingdom of God (1:15).

the Son of God:The predominant title for Jesus in Mark (1:1; 3:11; 5:7; 9:7; 12:6; 14:61; 15:39; CCC 422, 515). Both the works (miracles) and words (teaching) of Jesus substantiate this claim to divine Sonship, while the Father announces it publicly at his Baptism (1:11) and Transfiguration (9:7).